Having a [ or ] in a folder name will cause that filepath to be invalid for anything related to an .ini file

Tools - Feb 16, 2017

If a [ or ], which are used for syntax in .ini files, are included in a folder name, problems occur when that filepath is used for anything that is recorded in .ini files. The example given in the r ...

[CrashReport] UE4Editor_CoreUObject!UPackage::Save() [savepackage.cpp:4597]

UE - Gameplay - Blueprint Compiler - Jul 14, 2017

This is a common crash affecting users in 4.16. Users have not provided additional information. Source Context// Set the parent index, ifthis export represents a UStruct-derived object 4589 ...

[CrashReport] UE4Editor_Core!FName::GetDisplayNameEntry() [unrealnames.cpp:894]

UE - Rendering Architecture - Materials - Sep 14, 2017

This is a somewhat common crash in 4.17.1. This same callstack appeared a few times during 4.11, but then has not been seen until recently. Users have not provided any descriptions of their action ...

Pick New sprite option becomes unavailable if you change the view options

Tools - Jan 4, 2018

The Pick New sprite option becomes unavailable if you change the view options to either tile or column when working with the keyframes of a 2D animation. This issue affects the project indefinitely ...

UProceduralMeshComponent::UpdateMeshSection does not call UProceduralMeshComponent::UpdateCollision

UE - Simulation - Physics - Apr 20, 2020

Updating a procedural mesh results in an incomplete collision update. Collision bounds appear to get updated properly, but collision data is not updated, despite a navigation rebuild being triggered ...

Hot reloading after changing custom trigger volume code causes the volume bounds to vanish

UE - Gameplay - Nov 28, 2016

When the code for a custom trigger volume is changed and a hot reload is preformed, the green bounds of the volume disappear and the volume can no longer be interacted with. The bounds do not reapp ...

Editor Crash with corrupted asset when opening within level or via the content browser.

Tools - Jan 5, 2017

Editor will crash when a skeletal mesh has been added to a level and then reopening the project later if you try and access this level. If you attempt to open the skel meshes in the content browser ...

PhysicsBall BP not updating location with Collision volumes

UE - Simulation - Physics - Feb 2, 2017

PhysicsBallBP is unable to teleport via a collision volume (with either SetActorLocation or Teleport node). Regression: Error is not present in 4.14.3 but is present in 4.15.P3 Console error descr ...

Blueprint compile error can occur when trying to override a BlueprintImplementableEvent that takes a custom enum as a parameter

UE - Gameplay - Blueprint - Mar 1, 2017

When a BlueprintImplementableEvent that takes a custom enum as a parameter is overridden in a Blueprint, it will throw a compile error. The compile error states that the event cannot be overridden b ...

SetOneWayInteraction functionality has no effect on the simulation

UE - Simulation - Physics - Nov 11, 2022

Calling SetOneWayInteraction on a BodyInstance has no effect within the physics engine. The state of the flag is passed in to Chaos but nothing actually uses the value once it is there. It is expe ...